diff --git a/l10n_ar_account_withholding_ratio/README.rst b/l10n_ar_account_withholding_ratio/README.rst
new file mode 100644
index 000000000..858322b1b
--- /dev/null
+++ b/l10n_ar_account_withholding_ratio/README.rst
@@ -0,0 +1,61 @@
+.. |company| replace:: ADHOC SA
+
+.. |company_logo| image:: https://raw.githubusercontent.com/ingadhoc/maintainer-tools/master/resources/adhoc-logo.png
+   :alt: ADHOC SA
+   :target: https://www.adhoc.com.ar
+
+.. |icon| image:: https://raw.githubusercontent.com/ingadhoc/maintainer-tools/master/resources/adhoc-icon.png
+
+.. image:: https://img.shields.io/badge/license-AGPL--3-blue.png
+   :target: https://www.gnu.org/licenses/agpl
+   :alt: License: AGPL-3
+
+=============================
+Argentinean Withholding Ratio
+=============================
+
+Este módulo imlementa:
+
+* Permite establecer un ratio de 1 a 100 en el impuesto y representa el porcentaje de base imponible que se tendrá en cuenta para aplicar el impuesto siempre y cuando la alícuota del impuesto se obtenega del partner. Si bien se puede usar ese ratio para cualquier impuesto en principio fue solicitado solo para Córdoba.
+
+
+Installation
+============
+
+To install this module, you need to:
+
+#. Only need to install the module
+
+Configuration
+=============
+
+To configure this module, you need to:
+
+#. Nothing to configure
+
+Usage
+=====
+
+.. image:: https://odoo-community.org/website/image/ir.attachment/5784_f2813bd/datas
+   :alt: Try me on Runbot
+   :target: http://runbot.adhoc.com.ar/
+
+Credits
+=======
+
+Images
+------
+
+* |company| |icon|
+
+Contributors
+------------
+
+Maintainer
+----------
+
+|company_logo|
+
+This module is maintained by the |company|.
+
+To contribute to this module, please visit https://www.adhoc.com.ar.
diff --git a/l10n_ar_account_withholding_ratio/__init__.py b/l10n_ar_account_withholding_ratio/__init__.py
new file mode 100644
index 000000000..0650744f6
--- /dev/null
+++ b/l10n_ar_account_withholding_ratio/__init__.py
@@ -0,0 +1 @@
+from . import models
diff --git a/l10n_ar_account_withholding_ratio/__manifest__.py b/l10n_ar_account_withholding_ratio/__manifest__.py
new file mode 100644
index 000000000..36f592315
--- /dev/null
+++ b/l10n_ar_account_withholding_ratio/__manifest__.py
@@ -0,0 +1,21 @@
+{
+    'name': 'Argentinean Withholding Ratio',
+    'version': "17.0.1.0.0",
+    'category': 'Localization/Argentina',
+    'sequence': 14,
+    'author': 'ADHOC SA',
+    'website': 'www.adhoc.com.ar',
+    'license': 'AGPL-3',
+    'summary': '',
+    'depends': [
+        'l10n_ar_withholding_ux',
+    ],
+    'data': [
+        'views/account_tax_view.xml',
+    ],
+    'demo': [
+    ],
+    'installable': True,
+    'auto_install': False,
+    'application': False,
+}
diff --git a/l10n_ar_account_withholding_ratio/models/__init__.py b/l10n_ar_account_withholding_ratio/models/__init__.py
new file mode 100644
index 000000000..1353d6f5f
--- /dev/null
+++ b/l10n_ar_account_withholding_ratio/models/__init__.py
@@ -0,0 +1,5 @@
+##############################################################################
+# For copyright and license notices, see __manifest__.py file in module root
+# directory
+##############################################################################
+from . import account_tax
diff --git a/l10n_ar_account_withholding_ratio/models/account_tax.py b/l10n_ar_account_withholding_ratio/models/account_tax.py
new file mode 100644
index 000000000..791029661
--- /dev/null
+++ b/l10n_ar_account_withholding_ratio/models/account_tax.py
@@ -0,0 +1,30 @@
+from odoo import fields, models, api, _
+from odoo.exceptions import ValidationError
+
+
+class AccountTax(models.Model):
+    _inherit = 'account.tax'
+
+    ratio = fields.Float(default=100.00, help="Ratio to apply to tax base amount.")
+
+    @api.constrains('ratio')
+    def _check_line_ids_percent(self):
+        """ Check that the total percent is not bigger than 100.0 """
+        for tax in self:
+            if not tax.ratio or tax.ratio < 0.0 or tax.ratio > 100.0:
+                raise ValidationError(_('The total percentage (%s) should be higher than 0 and less or equal to 100.', tax.ratio))
+
+    def get_withholding_vals(self, payment):
+        vals = super().get_withholding_vals(payment)
+        if self.withholding_type == 'partner_tax' and self.ratio != 100:
+            vals['withholdable_base_amount'] *= self.ratio / 100
+            vals['period_withholding_amount'] *= self.ratio / 100
+        return vals
+
+    def _compute_amount(
+            self, base_amount, price_unit, quantity, product, partner=None, fixed_multiplicator=1):
+        if self.amount_type == 'partner_tax' and self.ratio != 100:
+            date = self._context.get('invoice_date') or fields.Date.context_today(self)
+            partner = partner and partner.sudo()
+            return base_amount * self.sudo().get_partner_alicuota_percepcion(partner, date) * self.ratio / 100
+        return super()._compute_amount(base_amount, price_unit, quantity, product, partner=partner, fixed_multiplicator=fixed_multiplicator)
diff --git a/l10n_ar_account_withholding_ratio/views/account_tax_view.xml b/l10n_ar_account_withholding_ratio/views/account_tax_view.xml
new file mode 100644
index 000000000..7fba2cbeb
--- /dev/null
+++ b/l10n_ar_account_withholding_ratio/views/account_tax_view.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+    <record id="view_tax_form" model="ir.ui.view">
+        <field name="name">account.tax.form</field>
+        <field name="model">account.tax</field>
+        <field name="inherit_id" ref="l10n_ar_withholding_ux.view_tax_form"/>
+        <field name="arch" type="xml">
+            <field name="withholding_user_error_message" position="after">
+                <label for="ratio" invisible="country_code != 'AR'"/>
+                <div invisible="country_code != 'AR'">
+                    <field name="ratio" class="oe_inline"/>
+                    %
+                </div>
+            </field>
+        </field>
+    </record>
+
+</odoo>
+